The rain has began. change this sentence into simple present tense quick

Match the definition to the word. infection conjugation affix, syntax specializion generalization amelioration etymology pejoration declension. 1.word derivation. 2.gaining a negative connotation. 3.narrowing in meaning. 4.going a positive connotation. 5.verb inflections. 6.ending denoting grammatical function. 7.broadening in meaning. 8.relations of sentence parts. 9.john inflections. 10.morphine added to a base.